Conversion between geotiff and CEOS format

PolSARpro SAR Polarimetry
#1

I have a large set of ALOS2-PALSAR2 scenes in geotiff format (level 1.5 georeferenced, rather than geocoded). I need to be able to geocode these scenes, but all the software options I’ve tried can only work with CEOS format. We don’t have the possibility to re-order in CEOS format due to budget constraints. Is there a way to convert from geotiff to CEOS format? I’ve had a look at gdal_translate options, but I can’t find a method to do this yet. Otherwise is there any opensource software that can geocode this format of data? Thanks for any help with this.

#2

as documented in this table, CEOS cannot be created by gdal drivers: https://gdal.org/drivers/raster/index.html
The problem is that Level 1.5 GeoTiff data only contains backscatter intensity while the CEOS SAR format stores the complex information (real and imaginary part) of a SAR acquisition. This information cannot be restored from later processing levels.

The only other open source programs I know are ASF MapReady and GITASAR, but both only take CEOS data as well.

What happens when you load the GeoTiffs into a GIS?

#3

Hi Selena,
Finding myself in the same situation. Curious to know if you have found a way out, please.
Best regards,
Haifa

#4

Maybe someone can help you when you describe what data you have and for what purpose you want to convert it.

#5

Yes, right. Thanks. So I’ve got PALSAR2 L1.1 GeoTiff and I am realising it is not the file type supported by ENVI SARscape. I did not know CEOS was the only type to have appropriate metadata.

#6

ok, I understand. As the file structure is entirely different, I don’t think this can be solved by a simple conversion. Do you have the chance to get the CEOS format from the provider as well?

#7

How I wish! Vendor is recommending new order at the same price. Is it possible that the GeoTiff in hand is completely “useless”?

#8

You can try if you can open the data with GITASAR: GITASAR: SAR image processing for beginners

#9

Thanks! Will do.

#10

Hi Haifa, I’m sorry I just saw your response now. Were you able to find a solution in the end? I’ve still not found any way forward with it. I also tried using the Gitasar software, but it only seems to work for the CEOS data. I’ll post back here if I do find a solution. Best wishes!